A4 (B5 Platform) Discussion Discussion forum for the B5 Audi A4 produced from 1995-2001 B5 FAQ

Downpipe bolts stuck

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Old 02-09-2003, 07:43 AM
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Default Downpipe bolts stuck

My muffler shop is trying to get the downpipe bolts off at the cat to install an APR exhaust. He can't take them off without possible breaking the welded nuts free. If that happens is there any way to remove them without taking out the cat? What is the chance of them breaking? Does anyone make some that will not rust?
Old 02-09-2003, 08:04 AM
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so break the welds theyre easily replaceable. i actually removed all because one was stripped
Old 02-09-2003, 08:07 AM
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Default Don't you have to take out the cat if they break ?...

The mechanic warned me it would take many hours to remove it. He dosen't know anything about A4s. Is it possible to get new bolts on without removing the cat? Thanks for your help.
Old 02-09-2003, 08:57 AM
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Default if they break the welds off then it easier to replace. unlike mine where it was stripped and the nut

is still welded in place
Old 02-09-2003, 03:46 PM
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Default SOAK them with PB-Blaster several times before they try...more

I did this on my 98.8 1.8TQMS and they came right out, no problem. I did go by the dealer and get new bolts and special copper nuts, just in case... Good luck.


Todd
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